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Finding the Fourth Proportional to 14,488.75, 19,994.48 and 7,864.75

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Solution

The fourth proportional to 14,488.75, 19,994.48 and 7,864.75 is: 10,853.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,488.75 : 19,994.48 = 7,864.75 : x
  2. Step 2: Convert to fraction form
    14,488.75/19,994.48 = 7,864.75/x
  3. Step 3: Cross multiply
    14,488.75x = 19,994.48 × 7,864.75
  4. Step 4: Simplify right side
    14,488.75x = 157,251,586.58
  5. Step 5: Solve for x
    x = 157,251,586.58/14,488.75
  6. Step 6: Final answer
    x = 10,853.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.